找考题网-背景图
单项选择题

A.a two-stroke engine works without exhaust operationB.……

One of the differences between a two-stroke engine and a four-stroke engine is,()

A.a two-stroke engine works without exhaust operation
B.a two-stroke engine works without compression stroke
C.a two-stroke engine works without expansion stroke
D.a two-stroke engine works without suction operation